I think that story might have been helpful at the time when the Allies were at their weakest, but they do not now need Russians, or stories of Russians, from Archangel.
The story must also go by the board that a submarine north of Ireland meant either a new type of boat that could go so far from Germany, or an unknown base nearer Scotland.
Submarines as now built could go from Germany around the British Isles and then across the Atlantic--in fair weather.
The eastern boundary of France divides itself into four very nearly equal sections.

Italy and Switzerland are the lower quarters of this boundary line; and of the upper quarters Belgium is the larger and Germany the smaller.

The southern half of the German quarter boundary is a mountain range and on the open sections stand the great fortifications of France and Germany, regarded by both countries as practically impregnable.

The defence of France on the Belgian frontier was the treaty which guaranteed the neutrality of the smaller country.
When Germany's conquering hosts came through Belgium, the war soon became a battle of human beings rather than of fortifications.

Neither the French nor the Germans had learned from practical experience the modern art of fighting human legions in ground trenches, but both sides quickly betook themselves to this rabbit method of warfare.
To-day from Switzerland to the North Sea is a double wall of 4,000,000 men, all fighting, not only for their own existence but for the existence of their nationality--their national ideals.